Api express, 
 a service connect on an external my Sql database. 
 All works well (find, get,...) 
 Add a field in the external database (not a mandatory field) 
 edit the Api express service to reflect that change 
 check the include box for the new field  
 Apply the change
and,..... nothing works, unable to access any of my records (find or get) with the correct payload. 
 Always have "{ 
   "code": "AE000", 
   "message": "Operation can not be performed", 
   "status": "BAD_REQUEST" 
 } 
 it become very frustating. I loose a lot of time.
Thanks
Sylvain